Malicious PDF — malware analysis report

Static analysis result for SHA-256 41020f7675555e04…

MALICIOUS

PDF

39.1 KB Created: 2020-10-25 16:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e23b5d7ee16a9560e562fc912c0f773c SHA-1: 63245b5eb7c55943d491b7bbcc8a43b54b778beb SHA-256: 41020f7675555e047323db99eaca35ee431afd2c8967d137de661d39fcff51a1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/123?keyword=bear+archery+approach+manual In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7d3707d5d.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/08a5ecf796.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/fekarumalovesen-lalapimekitove.pdfIn PDF document text
    • https://tadeganerusoza.weebly.com/uploads/1/3/1/4/131438541/tibabuladej.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/mikirosodavi.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/9298fbba.pdfIn PDF document text
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/xurenorame.pdfIn PDF document text
    • https://debaduvevuw.weebly.com/uploads/1/3/4/3/134383420/wobobif_kuwuwuwekov.pdfIn PDF document text
    • https://lonitavow.weebly.com/uploads/1/3/4/3/134355974/soridutuse_kokezexak.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/bobeduj.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jasamejug-jenutuzudemeluf.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/9179056.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000592a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000592a.bin)
    • https://s3.amazonaws.com/sugaguxagu/pikutigedojufakix.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/devesefesufimex.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/nodarefuzis.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/sofexiwotexurotugaje.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/63135559527.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/ice_cream_editor_review.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000592a.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000592a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592A 5148 bytes
SHA-256: da42af0678d921ef52df490868391018c2a9a3b3facbe5edbf02e74c8fd57b5c
font_01_sfnt_off00006a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A88 10768 bytes
SHA-256: 7ae0f88a39263c1bc3f34d4cf074d190899906810f99269bb8ec92b0e81c1ccd

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